A preliminary tidal analysis of ICESat laser altimetry: Southern Ross Ice Shelf

被引：15
|
作者：
Ray, R. D. [1 ]
机构：
[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD 21114 USA
来源：
GEOPHYSICAL RESEARCH LETTERS | 2008年 / 35卷 / 02期
关键词：
D O I：
10.1029/2007GL032125
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Satellite laser altimetry could soon play a key role in mapping poorly known ocean tides underneath Antarctic ice shelves. The amount of ICESat data now collected over the southernmost part of the Ross Ice Shelf is sufficient to warrant direct tidal analysis. Tides are estimated here from ten operational ICESat periods, totaling 363 days. A response analysis helps overcome unfavorable tidal sampling, especially an S(2) correlation with the annual cycle. Comparisons of tidal estimates against independent station data show RMS constituent differences around 3 cm - still somewhat large, but an encouraging result for such a challenging region.
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页数：5
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